Home / 3,003.90-4,147.32-2,688.61

Finding the Fourth Proportional to 3,003.90, 4,147.32 and 2,688.61

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Solution

The fourth proportional to 3,003.90, 4,147.32 and 2,688.61 is: 3,712.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,003.90 : 4,147.32 = 2,688.61 : x
  2. Step 2: Convert to fraction form
    3,003.90/4,147.32 = 2,688.61/x
  3. Step 3: Cross multiply
    3,003.90x = 4,147.32 × 2,688.61
  4. Step 4: Simplify right side
    3,003.90x = 11,150,515.66
  5. Step 5: Solve for x
    x = 11,150,515.66/3,003.90
  6. Step 6: Final answer
    x = 3,712.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.